﻿<p><em>IfcCsgPrimitive3D</em> is an abstract supertype of all three dimensional primitives used as either tree root
item, or as Boolean results within a CSG solid model. All 3D CSG primitives are defined within a three-dimensional
placement coordinate system.</p>
<blockquote class="history">HISTORY&nbsp; New entity in IFC2x3.</blockquote>